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  '79 to '93 -- The Fox Mustang & Capri
  YYY block

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Author Topic:   YYY block
rd400d
Journeyman

Posts: 7
From:
Registered: Jan 2002

posted 01-20-2002 12:07 PM     Click Here to See the Profile for rd400d     Edit/Delete Message   Reply w/Quote
I heard that the casting in the valley of a 5.0 with yyy is supposedly stronger and is out of a truck. If so my 5.0 came out of a lincoln (used 2.3 sparkplugs) and has this casting. Does anyone know?

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rd400d
Journeyman

Posts: 7
From:
Registered: Jan 2002

posted 01-22-2002 03:51 AM     Click Here to See the Profile for rd400d     Edit/Delete Message   Reply w/Quote
hasn't anyone ever heard of this? i guess not

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Stewart
Moderator

Posts: 8505
From: Monterey, CA Mustangsandmore Member #437
Registered: Apr 2000

posted 01-22-2002 09:20 PM     Click Here to See the Profile for Stewart   Click Here to Email Stewart     Edit/Delete Message   Reply w/Quote
Sorry bud. I haven't ever heard of it.

Stewart

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Allstock&500hp
Journeyman

Posts: 10
From: miami
Registered: Sep 2002

posted 09-28-2002 01:54 AM     Click Here to See the Profile for Allstock&500hp   Click Here to Email Allstock&500hp     Edit/Delete Message   Reply w/Quote
dont beleive what they say about "y"s and "x"s. they are the same metal, they are the same strength. the mexican blocks has more beef to them, those are the ones to get, next to the a4's.

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